HSS 4-Port WAN Module for 3Com NETBuilder II is a standard format module including a hydra cable that fans out to four cables, each with a FlexWAN connector.
This module supports RS-232, V.35, X.21, RS-449, and EIA530 signalling in DTE or DCE mode through the use of auto-sensing FlexWAN cables. It features four ports at T1/E1 rates concurrently, or two ports at 4 Mbps concurrently.